forked from pool/go1.17
Prepare for RPM 4.20 (forwarded request 1152227 from dimstar) OBS-URL: https://build.opensuse.org/request/show/1152297 OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/go1.17?expand=0&rev=23 |
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llvm-89f7ccea6f6488c443655880229c54db1f180153.tar.xz | ||
README.SUSE |
Updated: 05.05.2012 Authors: Graham Anderson, <graham@andtech.eu> PROJECT DETAILS --------------- OBS: https://build.opensuse.org/project/show?project=devel:languages:go Maintainers: Sascha Peilicke (saschpe), Graham Anderson (andtecheu) Wiki: http://en.opensuse.org/Go http://en.opensuse.org/openSUSE:Packaging_Go GENERAL NOTES ------------- Go toolchain environmental variables are configured via go.sh, which is installed to /etc/profile.d/go.sh Packaging guidelines and an RPM spec file recipe for packaging third party Go libraries can be found on the openSUSE wiki: http://en.opensuse.org/openSUSE:Packaging_Go The openSUSE go package uses the standard Go distribution toolchain, with a a small patchset to modify a few of the toolchain commands to suit our environment and packaging needs. This means that many of the standard go toolchain commands are not inside a users PATH, but rather are invoked and used via the "go" command. Should you wish to script or manually use the commands, the install location on a 64 bit system is /usr/lib64/go/pkg/tool/linux_amd64 The "go" tool, the "godoc" document server are inside a users PATH. We currently don't support the gccgo implementation, this is not for any other reason than contributer and maintainer time constraints. GO DOCUMENTATION ---------------- As of yet, there are no man pages for the standard Go distribution toolchain, please see the documentation provided by the "godoc" command. Man pages are slated to be included in the release in future. One of the diffs from the maintained patchset adds the distro specific doc and source file locations of the *-doc RPM packages to the virtual filesystem of the "godoc" documentation server. That is to say, as long as packages follow the Go packaging guidelines, API and other documentation should always be available via the godoc server if the packages "doc" RPM is installed. PACKAGE INSTALL LOCATIONS ------------------------- Go standard library packages are installed to a location in $GOROOT, which is defined as /usr/lib64/go on 64bit systems. Third party package binaries are installed to the default system wide $GOPATH entry. On 64bit systems the location /usr/lib64/go/contrib is used. This is specified in the macros.go RPM macro definition file that is part of the main Go package and is used for packaging most third party Go libraries. The reasons binary packages are installed to a GOPATH entry instead of GOROOT are mainly to do with how the Go toolchain prioritises and behaves with packages installed to the same location as the Go std library. By installing third party packages to a system-wide GOPATH entry location, we can ensure that no packages clobber the standard library namespace or file tree. Additionally we can support binary only packages, which as of Go 1.1 will only be supported outside of the $GOROOT. There are additional benefits to this location; such as allowing users and developers to prioritise linking from their own user defined GOPATH, which defaults to $HOME/go configured via /etc/profile.d/go.sh config. This has particular benefit for development workflows. For Go 1.1 and beyond, building and linking with binary only pacakges will only be supported with the following caveat. Package source code must not exist in the same GOPATH segment as the binary package .a archive file. If both the binary archive (.a) and the package source are installed to the same GOPATH segment, then the "go build" or "go install" command will prioritise building the software using package sources before using package binary archives. A side effect of this is that is actually possible to have source code only third party packages. To summarise the priority of binary package linking and building: 1. Any source files or binary packages in $GOROOT are considered first. Any binary packages in $GOROOT that are considered "stale" by the build tools are ignored in favour of the package source. 2. $GOPATH is considered next for import statements. GOPATH is a colon delimited list of paths. GOPATH segments are examined by the build tools in a FIFO manner, left to right. Both a system wide and a user GOPATH segment are configured by default, the user GOPATH segment takes priority over the system segment to allow flexibility for development workflows. The default user GOPATH is: GOPATH=$HOME/go:$GOROOT/contrib The default root user GOPATH is: GOPATH=$GOROOT/contrib 3. For Go < 1.1, If both the source and binary archive is available for a package import in the same GOPATH segment, the binary archive will take precedence and will be linked during compilation. For Go >= 1.1 If the package source is avaiable in the GOPATH segment, it will always be used in preference to the binary